<article>
<form action="<?php echo url_for('documentos/eliminar') ?>" method="POST">
  <table>
      <thead>
          <thead>          
          <tr>
              <th colspan="2"><h2 id="titulo_form">BUSCAR UN REGISTRO</h2></th>
          </tr>          
          </thead>
        </thead>          
      </thead>
      <tbody>
          <tr>
              <td><label>id Beca</label></td>
              <td><input type="text" name="id_beca" id="id_beca" value="<?php echo $id_beca;?>"/></td>
          </tr>
          <tr>
            <tr><td colspan="2"><input id="boton" type="submit" value="Terminar"/></td>             
          </tr>
      </tbody>
    <tfoot>
    <tr>   
        <td></td>
        <td></td>        
    </tr>   
    </tfoot>
  </table>
</form>
</article>
<footer>
    <div id="container"></div>
</footer>